In case you don't see the problem inherent in even your analogy: If the bakery goes away, or refuses to sell further bread to the sandwich maker, the maker is fucked.
And there's less than ten bakeries world-wide.
And if the sandwich maker actually got popular enough that people would only buy from them, then the bakeries would indeed give them the finger.
Maybe Google makes the best bread, but it might be true that someone might make a sandwich on inferior bread that makes for a better overall snack.